ppc: Fix sign extension issue in mtmsr(d) emulation
[qemu.git] / accel.c
1 /*
2 * QEMU System Emulator, accelerator interfaces
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 * Copyright (c) 2014 Red Hat Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
26 #include "qemu/osdep.h"
27 #include "sysemu/accel.h"
28 #include "hw/boards.h"
29 #include "qemu-common.h"
30 #include "sysemu/arch_init.h"
31 #include "sysemu/sysemu.h"
32 #include "sysemu/kvm.h"
33 #include "sysemu/qtest.h"
34 #include "hw/xen/xen.h"
35 #include "qom/object.h"
36 #include "hw/boards.h"
37
38 int tcg_tb_size;
39 static bool tcg_allowed = true;
40
41 static int tcg_init(MachineState *ms)
42 {
43 tcg_exec_init(tcg_tb_size * 1024 * 1024);
44 return 0;
45 }
46
47 static const TypeInfo accel_type = {
48 .name = TYPE_ACCEL,
49 .parent = TYPE_OBJECT,
50 .class_size = sizeof(AccelClass),
51 .instance_size = sizeof(AccelState),
52 };
53
54 /* Lookup AccelClass from opt_name. Returns NULL if not found */
55 static AccelClass *accel_find(const char *opt_name)
56 {
57 char *class_name = g_strdup_printf(ACCEL_CLASS_NAME("%s"), opt_name);
58 AccelClass *ac = ACCEL_CLASS(object_class_by_name(class_name));
59 g_free(class_name);
60 return ac;
61 }
62
63 static int accel_init_machine(AccelClass *acc, MachineState *ms)
64 {
65 ObjectClass *oc = OBJECT_CLASS(acc);
66 const char *cname = object_class_get_name(oc);
67 AccelState *accel = ACCEL(object_new(cname));
68 int ret;
69 ms->accelerator = accel;
70 *(acc->allowed) = true;
71 ret = acc->init_machine(ms);
72 if (ret < 0) {
73 ms->accelerator = NULL;
74 *(acc->allowed) = false;
75 object_unref(OBJECT(accel));
76 }
77 return ret;
78 }
79
80 void configure_accelerator(MachineState *ms)
81 {
82 const char *p;
83 char buf[10];
84 int ret;
85 bool accel_initialised = false;
86 bool init_failed = false;
87 AccelClass *acc = NULL;
88
89 p = qemu_opt_get(qemu_get_machine_opts(), "accel");
90 if (p == NULL) {
91 /* Use the default "accelerator", tcg */
92 p = "tcg";
93 }
94
95 while (!accel_initialised && *p != '\0') {
96 if (*p == ':') {
97 p++;
98 }
99 p = get_opt_name(buf, sizeof(buf), p, ':');
100 acc = accel_find(buf);
101 if (!acc) {
102 fprintf(stderr, "\"%s\" accelerator not found.\n", buf);
103 continue;
104 }
105 if (acc->available && !acc->available()) {
106 printf("%s not supported for this target\n",
107 acc->name);
108 continue;
109 }
110 ret = accel_init_machine(acc, ms);
111 if (ret < 0) {
112 init_failed = true;
113 fprintf(stderr, "failed to initialize %s: %s\n",
114 acc->name,
115 strerror(-ret));
116 } else {
117 accel_initialised = true;
118 }
119 }
120
121 if (!accel_initialised) {
122 if (!init_failed) {
123 fprintf(stderr, "No accelerator found!\n");
124 }
125 exit(1);
126 }
127
128 if (init_failed) {
129 fprintf(stderr, "Back to %s accelerator.\n", acc->name);
130 }
131 }
132
133
134 static void tcg_accel_class_init(ObjectClass *oc, void *data)
135 {
136 AccelClass *ac = ACCEL_CLASS(oc);
137 ac->name = "tcg";
138 ac->init_machine = tcg_init;
139 ac->allowed = &tcg_allowed;
140 }
141
142 #define TYPE_TCG_ACCEL ACCEL_CLASS_NAME("tcg")
143
144 static const TypeInfo tcg_accel_type = {
145 .name = TYPE_TCG_ACCEL,
146 .parent = TYPE_ACCEL,
147 .class_init = tcg_accel_class_init,
148 };
149
150 static void register_accel_types(void)
151 {
152 type_register_static(&accel_type);
153 type_register_static(&tcg_accel_type);
154 }
155
156 type_init(register_accel_types);